Prediction of the rates of fertilization, cleavage, and pregnancy success by cumulus- coronal morphology in an in vitro fertilization program Siu T. Ng,

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Presentation transcript:

Prediction of the rates of fertilization, cleavage, and pregnancy success by cumulus- coronal morphology in an in vitro fertilization program Siu T. Ng, M.D., Tai-Ho Chang, M.D., T-C.Jackson Wu, M.D., Ph.D. Fertility and Sterility Volume 72, Issue 3, Pages 412-417 (September 1999) DOI: 10.1016/S0015-0282(99)00290-3

Figure 1 The grading of CCM at oocyte retrieval. Representative photographs of grades 1 (A), 2 (B), 3 (C), and 4 (D) CCM. Grade 1 COCs display corona radiata cells and sparse cumulus cells. Grade 2 COCs display tightly packed corona cells and dense cumulus cells. Grade 3 mature COCs display expanded corona cells and expanded fluffy cumulus cells. Grade 4 postimmature COCs display dark, degenerated corona cells and expanded, scanty cumulus cells. (credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999. Fertility and Sterility 1999 72, 412-417DOI: (10.1016/S0015-0282(99)00290-3)

Figure 2 The rates of normal fertilization, polyspermy, and cleavage among the four CCM grades. ∗P<.05 compared with the other CCM groups. □ = grade 1; = grade 2; = grade 3; and ■ = grade 4. (credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999. Fertility and Sterility 1999 72, 412-417DOI: (10.1016/S0015-0282(99)00290-3)

Figure 3 The percentage of pregnancies per cycle versus the percentage of grade 3 COCs per cycle. The bars represent the SE. ∗P <.05. (credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999. Fertility and Sterility 1999 72, 412-417DOI: (10.1016/S0015-0282(99)00290-3)

Figure 4 The distribution of pregnancy outcome according to the percentage of grade 3 COCs per cycle and patient age. ▵ = not pregnant; • = pregnant. (credit)Ng. Cumulus-coronal morphology. Fertil Steril 1999. Fertility and Sterility 1999 72, 412-417DOI: (10.1016/S0015-0282(99)00290-3)